Inserting a Point Cloud into a Drawing

To insert a point cloud into a drawing, use the oddbCreatePointCloudExEntity() function:


OdResult oddbCreatePointCloudExEntity(
  OdDbBlockTableRecord* pBTR,
  OdDbPointCloudExPtr& newPointCloud,
  const OdString& sourceFile,
  const OdGePoint3d& location,
  double             scale,
  double             rotation,
  const OdGeVector3d& vAxis);

Here is an example of adding point cloud to a drawing (see the OdWriteEx sample application: Drawing/Examples/OdWriteEx/DbFiller.cpp):


void DbFiller::addPointCloudEx(OdDbDatabase* pDb, const int boxRow, const int boxCol, const OdDbObjectId& layerId, const OdDbObjectId& styleId)
{
  /**********************************************************************/
  /* Open the BlockTableRecord                                          */
  /**********************************************************************/
  OdDbObjectId blockId = pDb->getModelSpaceId();
  OdDbBlockTableRecordPtr bBTR = blockId.safeOpenObject(OdDb::kForWrite);

  OdGePoint3d point = m_EntityBoxes.getBox(boxRow, boxCol);

  /**********************************************************************/
  /* Add the label                                                      */
  /**********************************************************************/
  addTextEnt(bBTR, point + m_textOffset, point + m_textOffset,
    OD_T("Point Cloud Ex"), m_textSize, OdDb::kTextLeft, OdDb::kTextTop, layerId, styleId);

  /**********************************************************************/
  /* File name for RCS file                                             */
  /**********************************************************************/
  OdString rcsFileName = "bunny2.rcs";

  OdGePoint3d p1, p2;
  OdGeExtents3d extents(p1, p2);
  OdGeVector3d translation;

  if (::odSystemServices()->accessFile(rcsFileName, Oda::kFileRead))
  {
    /**********************************************************************/
    /* Start parsing RCS file                                             */
    /**********************************************************************/

    OdRxRcsFileServicesPtr pRcsFileServices;
    pRcsFileServices = odrxDynamicLinker()->loadApp(RX_RCS_FILE_SERVICES);
    if (!pRcsFileServices.isNull())
    {
      OdPointCloudScanDatabasePtr pScanDb;
      pScanDb = pRcsFileServices->readRcsFile(rcsFileName);
      if (!pScanDb.isNull())
      {
        extents = pScanDb->getTransformedExtents();
        translation = pScanDb->getTranslation();
      }
    }

    /**********************************************************************/
    /* Calculate point cloud scale and center position                    */
    /**********************************************************************/
    double scale = 1;
    if (extents.maxPoint().x - extents.minPoint().x != 0)
      scale = m_EntityBoxes.getWidth(boxRow, boxCol) / (extents.maxPoint().x - extents.minPoint().x);

    OdGePoint3d location = m_EntityBoxes.getBoxCenter(boxRow, boxCol);
    translation = location.asVector() - translation * scale;
    location.set(translation.x, translation.y, translation.z);

    /**********************************************************************/
    /* Load point cloud module                                            */
    /**********************************************************************/

    OdRxModulePtr pPointCloudModule = ::odrxDynamicLinker()->loadApp(DbPointCloudObjModuleName);
    if (!pPointCloudModule.isNull())
    {
      /**********************************************************************/
      /* Create point cloud entity                                          */
      /**********************************************************************/
      OdDbPointCloudExPtr pPointCloud;
      oddbCreatePointCloudExEntity(bBTR, pPointCloud, rcsFileName, location, scale);
    }
  }  
}

See Also